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Finding the Fourth Proportional to 5,709.51, 7,873.88 and 3,719.34

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Solution

The fourth proportional to 5,709.51, 7,873.88 and 3,719.34 is: 5,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,709.51 : 7,873.88 = 3,719.34 : x
  2. Step 2: Convert to fraction form
    5,709.51/7,873.88 = 3,719.34/x
  3. Step 3: Cross multiply
    5,709.51x = 7,873.88 × 3,719.34
  4. Step 4: Simplify right side
    5,709.51x = 29,285,618.24
  5. Step 5: Solve for x
    x = 29,285,618.24/5,709.51
  6. Step 6: Final answer
    x = 5,129.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.